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"""Unit tests for the FileChecker class."""
from unittest import mock
import pytest
import flake8
from flake8 import checker
@mock.patch("flake8.checker.FileChecker._make_processor", return_value=None)
def test_repr(*args):
"""Verify we generate a correct repr."""
file_checker = checker.FileChecker(
"example.py",
checks={},
options=object(),
)
assert repr(file_checker) == "FileChecker for example.py"
def test_nonexistent_file():
"""Verify that checking non-existent file results in an error."""
c = checker.FileChecker("foobar.py", checks={}, options=object())
assert c.processor is None
assert not c.should_process
assert len(c.results) == 1
error = c.results[0]
assert error[0] == "E902"
def test_raises_exception_on_failed_plugin(tmp_path, default_options):
"""Checks that a failing plugin results in PluginExecutionFailed."""
foobar = tmp_path / "foobar.py"
foobar.write_text("I exist!") # Create temp file
plugin = {
"name": "failure",
"plugin_name": "failure", # Both are necessary
"parameters": dict(),
"plugin": mock.MagicMock(side_effect=ValueError),
}
"""Verify a failing plugin results in an plugin error"""
fchecker = checker.FileChecker(
str(foobar), checks=[], options=default_options
)
with pytest.raises(flake8.exceptions.PluginExecutionFailed):
fchecker.run_check(plugin)
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